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Two methods are presented for the synthesis of the title compounds starting from cyclobutenediones: an alkoxide substitution approach and a Staudinger reaction. Unsaturated lithiumorganyls may be added to the remaining carbonyl group and on heating lead to ring enlargement in a cascading process. 4-Alkenyl or 4-aryl derivatives yield aminophenols ornaphthols; 4-alkynyl compounds give cyclopenta-annulated quinolines. © Georg Thieme Verlag Stuttgart. eScholarship provides open access, scholarlydoi:10.1055/s-0029-1218767 fatcat:lxu7a2ukszcrndzesrsiezvydi